Energy Analysis on Dynamic Fragmentation Degree of Cemented Sand Specimens under Confining Pressure

Table 3

Dynamic fracture physical parameters and calculation of fragmentation energy consumption factor for cemented sand specimens.

Number					(J)	(J)	(J)		AVG
DL-2-1	0.08	2.45	13.2	0.93	12.07	0.2306	11.84	28.95	18.56
DL-2-5	0.1	2.78	18.0	0.97	12.75	0.2729	12.48	20.49
DL-2-7	0.12	3.03	21.0	1.18	13.31	0.3077	13.00	14.83
DL-2-10	0.14	3.27	23.8	1.29	13.98	0.3467	13.63	15.29
DL-2-15	0.16	3.45	29.2	1.52	14.57	0.3785	14.19	13.26

: impact air pressure; : impact velocity; : average strain rate; : dynamic tensile strength; : energy absorbed by the specimen; : kinetic energy of fragments; : fracture damage energy; : fragmentation energy consumption factor; AVG: mean value of fragmentation energy consumption factor.